Carson City has withdrawn its opposition to a constitutional challenge to Nevada's ban on gay marriage.

According to the Daily Herald, the city's district attorney, Neil Rombardo, had filed a brief on behalf of Carson City Clerk-Recorder Alan Glover in a 9th Circuit Court appeal filed by eight plaintiff couples to a 2012 ruling upholding Nevada's ban on same-sex marriage. The brief urged the appeals court to uphold the lower court's ruling.

Rombardo said that a 9th Circuit ruling which found it unconstitutional to exclude jurors based on sexual orientation spurred his office to act.

“That SmithKline case was [a] game changer and it changed the analysis in our circuit,” Rombardo told the paper.

He said that the city's concerns revolved around other challenges which could arise should the ban fall.

“I did not oppose equal rights marriage,” Rombardo said. “I do oppose polygamy. I do not think they are one and the same. … Any concern I had regarding the previous analysis was gone.”

Lead plaintiffs in the case are two women in their 70s who have raised 3 children and have 4 grandchildren. Beverly Sevcik and Mary Baranovich have been together more than four decades.

(Related: 11 attorneys general: Gay marriage will lead to “tragic deconstruction” of marriage.)